Uyenza njani iprototype ngempumelelo yePCB ene-EMI/EMC ekhuselayo

Kwihlabathi elihlala liguquka lee-elektroniki, i-PCB (iBhodi yeSekethe eShicileleyo) iprototyping ene-EMI/EMC (i-Electromagnetic Interference/Electromagnetic Compatibility) iya ibaluleke kakhulu. Ezi zikhuselo ziyilelwe ukunciphisa ukusasazeka kwemitha yombane kunye nengxolo ekhutshwa zizixhobo zombane, ukuqinisekisa ukusebenza kwazo ngokufanelekileyo kunye nokuthobela imigangatho yolawulo.

Nangona kunjalo, iinjineli ezininzi kunye nee-hobbyists ziyasokola ukufezekisa ukhuseleko lwe-EMI/EMC olusebenzayo ngexesha le-PCB prototyping stage.Kule post yebhlog, siza kuxoxa ngamanyathelo abandakanyekayo ekufaniseni ngempumelelo i-PCB ene-EMI/EMC ekhuselayo, ikubonelela ngolwazi oluyimfuneko lokoyisa nayiphi na imingeni onokudibana nayo.

1. Qonda ukhuselo lwe-EMI/EMC

Okokuqala, kubalulekile ukubamba imiba esisiseko ye-EMI/EMC ekhuselayo. I-EMI ibhekisa kumandla ombane angafunekiyo anokuphazamisana nokusebenza okuqhelekileyo kwezixhobo zombane, ngelixa i-EMC ibhekisa kubuchule besixhobo ukusebenza ngaphakathi kwendawo yaso yombane ngaphandle kokubangela ukuphazamiseka.

Ukukhusela i-EMI/EMC kubandakanya amaqhinga kunye nemathiriyeli enceda ukuthintela amandla ombane ukuba ahambe kwaye abangele uphazamiseko. Ukukhusela kunokufezekiswa ngokusebenzisa izinto zokuqhuba, ezifana ne-foil yesinyithi okanye ipeyinti eqhubayo, eyenza umqobo ojikeleze indibano ye-PCB.

2. Khetha izinto ezifanelekileyo zokukhusela

Ukukhetha izinto ezifanelekileyo zokukhusela kubalulekile kukhuseleko olusebenzayo lwe-EMI/EMC. Izinto ezisetyenziswa ngokuqhelekileyo ezikhuselayo ziquka ubhedu, i-aluminium kunye nentsimbi. I-Copper ithandwa kakhulu ngenxa ye-conductivity yayo yombane. Nangona kunjalo, ezinye izinto kufuneka ziqwalaselwe xa ukhetha izinto zokukhusela, ezifana neendleko, ubunzima kunye nokulula kokwenziwa.

3. Cwangcisa uyilo lwePCB

Ngexesha le-PCB prototyping stage, ukubekwa kwecandelo kunye nokuqhelaniswa kufuneka kuqwalaselwe ngononophelo. Isicwangciso esifanelekileyo soyilo lwePCB sinokunciphisa kakhulu iingxaki ze-EMI/EMC. Ukudibanisa amacandelo aphezulu-frequency kunye kunye nokuwahlula kumalungu abuthathaka kunceda ukuthintela ukudityaniswa kwe-electromagnetic.

4. Ukusebenzisa iindlela zokubeka phantsi

Ubuchule bomhlaba budlala indima ebalulekileyo ekunciphiseni imiba ye-EMI/EMC. Ukumisa okufanelekileyo kuqinisekisa ukuba onke amacandelo ngaphakathi kwe-PCB aqhagamshelwe kwindawo yesalathiso eqhelekileyo, ngaloo ndlela kuncitshiswa umngcipheko we-loops yomhlaba kunye nokuphazamiseka kwengxolo. Inqwelomoya eqinileyo yomhlaba kufuneka yenziwe kwi-PCB kunye nawo onke amacandelo abalulekileyo aqhagamshelwe kuyo.

5. Sebenzisa iteknoloji yokukhusela

Ukongeza ekukhetheni izixhobo ezifanelekileyo, ukusebenzisa iindlela zokukhusela kubalulekile ekunciphiseni imiba ye-EMI/EMC. Obu buchule bubandakanya ukusebenzisa ukukhusela phakathi kweesekethe ezinovakalelo, ukubeka amacandelo kwiindawo ezivaliweyo, kunye nokusebenzisa iinkonkxa ezikhuselweyo okanye iziciko ukwahlula ngokwasemzimbeni amalungu abuthathaka.

6. Ukwandisa imfezeko yomqondiso

Ukugcina imfezeko yomqondiso kubalulekile ekuthinteleni ukuphazamiseka kwe-electromagnetic. Ukusebenzisa iindlela ezifanelekileyo zokuhambisa umqondiso, njengokubonisa umahluko kunye nokulawulwa kwendlela yokuthintela, kunokuncedisa ukunciphisa umqondiso ngenxa yempembelelo yangaphandle ye-electromagnetic.

7. Uvavanyo kwaye uphindaphinde

Emva kokuba iprototype ye-PCB idityanisiwe, ukusebenza kwayo kwe-EMI/EMC kufuneka kuvavanywe. Iindlela ezahlukeneyo, ezinje ngovavanyo lokuphuma kunye novavanyo lokuchaphazeleka, zinokunceda ukuvavanya ukusebenza kwetekhnoloji yokukhusela esetyenzisiweyo. Ngokusekwe kwiziphumo zovavanyo, uphindaphindo oluyimfuneko lunokwenziwa ukuphucula ukusebenza kokhuselo.

8. Sebenzisa izixhobo ze-EDA

Ukusebenzisa i-electronic design automation (EDA) izixhobo zingenza lula kakhulu inkqubo ye-PCB yeprototyping kunye noncedo kwi-EMI/EMC yokukhusela. Izixhobo ze-EDA zibonelela ngezakhono ezinje ngokulinganisa intsimi ye-electromagnetic, uhlalutyo lwemfezeko yomqondiso, kunye nokulungiswa koyilo lwecandelo, ukuvumela iinjineli ukuba zichonge imiba enokubakho kwaye zandise uyilo lwazo ngaphambi kokwenza.

Isishwankathelo

Ukuyila iiprototypes ze-PCB kunye ne-EMI/EMC esebenzayo yokukhusela kubalulekile ukuqinisekisa ukusebenza okufanelekileyo kunye nokuthotyelwa kwemigangatho yolawulo.Ngokuqonda iikhonsepthi ezisisiseko zokukhusela i-EMI/EMC, ukukhetha izinto ezifanelekileyo, ukuphumeza iindlela ezifanelekileyo, kunye nokusetyenziswa kwezixhobo ze-EDA, iinjineli kunye nee-hobbyists zinokuloyisa ngempumelelo imingeni yesi sigaba esibalulekileyo sophuhliso lwePCB. Ke, yamkela ezi ndlela zokuziqhelanisa kwaye uqalise uhambo lwakho lwe-PCB prototyping ngokuzithemba!